Brown-Forman's Fetzer Vineyards is set to launch ultra-premium wine Fetzer Coro Mendocino at next week's Wine Institute of California tasting in London.

The wine is a result of a collaborative project by Mendocino winemakers to create a series of ultra-premium wines from the area - along the lines of a French AOC.

Fetzer's Coro Mendocino 2002 is made up of 41% Zinfandel, 33% Syrah, 21% Petite Sirah and 5% Grenache and aged for 18 months in French oak barrels.

The criteria set under the scheme meant only fruit grown from Mendocino County, Northern California could be used. Zinfandel had to be the dominant varietal in the wine and make up from 40 to 70% of the blend.

Eight other wineries have released wines as part of the project, including Eaglepoint Ranch Winery, Golden Vineyards and Pacific Star Winery. All Coro wines have a recommended retail price of around GBP20 (US$34.94) a bottle.